N,N-Bond-Forming Heterocyclization:  Synthesis of 3-Alkoxy-2H-indazoles

A one-step heterocyclization of o-nitrobenzylamines to 3-alkoxy-2H-indazoles is reported. The electronic nature of the nitrophenyl group, the steric and electronic nature of the R-1-functionalized benzylic amine, and the nature of the alcoholic solvent affect the efficiency of this heterocyclization reaction (similar to 40-90%).